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Bronchi

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উত্তরিতবর্তমানপুনরায় দেখুনঅসম্পূর্ণ

Bronchi

PrepBank · পাতা ১ / ১ · ১–৫ / ৫

১.
Important in bronchoconstriction & bronchodialatation?
  1. ক
    ক) Bronchi
  2. খ
    খ) Bronchiole
  3. গ
    গ) Alveolar ducts
  4. ঘ
    ঘ) Alveoli
২.
What is the function of the cilia on the cells that line the bronchial tree?
  1. ক
    ক) They help mix the inhaled fresh air with the residual air contained in the bronchial tree.
  2. খ
    খ) They slow the movement of air to allow for efficient exchange of gases.
  3. গ
    গ) They move the mucus on the cell surface up out of the bronchial tree.
  4. ঘ
    ঘ) They filter particles from inhaled air.
ব্যাখ্যা
The beating of the cilia moves mucus lying on the surface of the epithelium of the conducting zone, and any contained dust, up out of the bronchial tree.
৩.
Which structural feature distinguishes between terminal and respiratory bronchioles?
  1. ক
    ক) Alveoli
  2. খ
    খ) Cilia
  3. গ
    গ) Exocrine bronchiolar cells
  4. ঘ
    ঘ) Mucous glands in lamina propria
ব্যাখ্যা
Reference: Junqueira’s Basic Histology; 14th Edition; Page-370
৪.
What does sympathetic nervous system stimulation to the smooth muscle layers in the bronchioles cause?
  1. ক
    ক) Bronchoconstriction
  2. খ
    খ) Bronchodilation
  3. গ
    গ) An increase in tidal volume
  4. ঘ
    ঘ) Increase in activity of the cilia
ব্যাখ্যা
Bronchodilation is stimulated by sympathetic nerve impulses, adrenalin & noradrenalin. Bronchoconstriction triggered by parasympathetic nerve impulses.
৫.
Terminal bronchioles-
  1. ক
    are part of the respiratory zone
  2. খ
    are lined by ciliated and non ciliated cuboidal epithelium
  3. গ
    have goblet cells in the epithelium
  4. ঘ
    have hyaline cartilage in their wall